Zte ZXMW NR8120D - Checking the Status of Indicators; Monthly Maintenance; Checking Power Supply; Cleaning the Equipment

Chapter1RoutineMaintenance
2.Verifythattherearenoabnormaldeviceevents.Ifthereisany,locatethesystem
faultsandresolvetheminatimelymanner.
–EndofSteps–
1.1.6CheckingtheStatusofIndicators
Analyzingthestatusofindicatorsisacommonmethodusedwhenafaultisdetected.
Maintenancepersonnelcanlocateandresolvethefaultsbyobservingthestatusof
indicatorsoneachboardpanel.
Fordetailedinformationofthestatusofindicators,referto"Chapter4Indicators".
1.2MonthlyMaintenance
1.2.1CheckingPowerSupply
Thisproceduredescribeshowtochecktheequipment'spowersupplytoensurethatthe
equipmentcanoperateproperly.
Steps
1.Verifythatthestatusofthepowercabinet(UninterruptiblePowerSupply(UPS))is
normal.
2.Verifythattheairbreakswitchpowersupplyoftheportalframeisnormal.
3.Verifythattherack,antennafeeder,IDU,ODU,andlightningprotectorarewell
grounded.
4.VerifythatthepowerindicatorsofthefollowingboardsoftheIDUareinnormalstatus:
TheOPWERindicatorsoftheRadioCoreCrossModemUnitA(RCMUA)andRadio
ModemExpansionA(RMEA)board.
–EndofSteps–
1.2.2CleaningtheEquipment
Thisproceduredescribeshowtocleantheequipment.
Communicationequipmentislikelytobecontaminatedafteroperatingforalongtime.
CleaningtheequipmentregularlycanreduceBitErrorRate(BER),faultrate,andboard
failureratebyimprovingtheheatdissipationcapabilityoftheequipment.
Steps
1.Ifpossible,powerofftheequipment,detachthecircuitboardsandcomponentsfrom
theequipmentinaccordancewiththespeciedprocedure,andthenfullycleaneach
partoftheequipment.
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SJ-20150804150350-006|2015-09-17(R1.0)ZTEProprietaryandCondential